Pheidole taurus

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Pheidole taurus
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Pheidole
Species: P. taurus
Binomial name
Pheidole taurus
Emery, 1906

Pheidole taurus casent0904313 p 1 high.jpg

Pheidole taurus casent0904313 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of taurus.

Identification

See the description in the nomenclature section.

Keys including this Species

Distribution

Buenos Aires and Santa Fé, Argentina (Kempf 1972b).

Distribution based on Regional Taxon Lists

Neotropical Region: Argentina (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Biology

The type series, and only known specimens, of Solenopsis abjectior were collected in association with a nest of P. taurus.

Castes

Worker

Minor

Major

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • taurus. Pheidole taurus Emery, 1906c: 142, fig. 20 (s.w.q.) ARGENTINA. Combination in P. (Elasmopheidole): Forel, 1913k: 43. See also: Wilson, 2003: 141.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

From Wilson (2003): The most distinctive member of the aberrans group and one of the most unusual Pheidole species.

Major: frontal lobes drawn out into sharp, downward- and inward-curving horn-like extensions that reach beyond the clypeus to overhang the bases of the mandibles; laterally the edges of the frontal lobes extend past the margins of the head; bicolorous (see color below); carinulae of head confined to a broad band from the level of the frontal triangle to the transverse carina that delimits the beginning of the occiput.

Minor: promesonotal dorsum covered by semicircular carinae; carinulae on head mostly limited to antennal fossae and clypeus.

MEASUREMENTS (mm) Lectotype major: HW 1.08, HL 1.24, SL 0.42, EL 0.10, PW 0.66. Paralectotype minor: HW 0.48, HL 0.56, SL 0.42, EL 0.08, PW 0.34.

COLOR Major: concolorous reddish yellow, including midclypeus, but “horns” (extended frontal lobes), together with the frontal triangle and vertex, are dark brown, forming a “mask” over anterior dorsal surface of the head.


Pheidole taurus Wilson 2003.jpg

Figure. Upper: lectotype, major. Lower: paralectotype, minor. Scale bars = 1 mm.

Lectotype Specimen Labels

Type Material

Museo Civico di Storia Naturale, Genoa ARGENTINA: Santa Catalina, Buenos Aires. (Wilson 2003)

Etymology

Gr taurus, bull, alluding to the horn-like frontal lobes of the major. (Wilson 2003)

References

  • Emery, C. 1906c [1905]. Studi sulle formiche della fauna neotropica. XXVI. Bull. Soc. Entomol. Ital. 37: 107-194 (page 142, fig. 20 soldier, worker, queen described)
  • Forel, A. 1913l. Wissenschaftliche Ergebnisse einer Forschungsreise nach Ostindien ausgeführt im Auftrage der Kgl. Preuss. Akademie der Wissenschaften zu Berlin von H. v. Buttel-Reepen. II. Ameisen aus Sumatra, Java, Malacca und Ceylon. Gesammelt von Her (page 43, Combination in P. (Elasmopheidole))
  • Kempf, W. W. 1972b. Catálogo abreviado das formigas da região Neotropical. Stud. Entomol. 15: 3–344
  • Wilson, E. O. 2003. Pheidole in the New World: A dominant, hyperdiverse ant genus. Harvard University Press, Cambridge, MA. (page 141, fig. major, minor described; see also)